Gas fired air heater



Au 11, 1953 E, KENT 2,648,323

. GAS FIRED AIR HEATER Filed March 22, 1948 INVENTOR. EDWARD KENT.

' 3 Sheets-Sheet l Aug. 11, 1953 E. KENT GAS FIRED AIR HEATER 5 Sheets-Sheet 2 Filed March 22, 1948 INVENTOR. EDWARD. A's/v7.

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E. KENT GAS FIRED AIR HEATER Aug. 11,1953

s Sheets-Sheet 3 Filed llarch 22, 1948 I INVENTOR. sow/mo KENT Arrow/vex Patented Aug. 11, 1953 Edward Kent, Detroit, Mich., assignor by direct. and. mesne assignments, of twenty-two per. cent to Charles E. Wisner, twenty-two per. centto; Clarence; J. McLeod, and twenty per. cent to.

Carlton F. Brown ApplicationvMarch 22, 1948, Serial'No. 16,291

1. Claiin. l.

Thisinvention relates to,.an. air conditioning system for use in heating a roomaor rooms;of.a building and particularly adapted for use in a dwelling, the object being to-provide a new characten and form of apparatusto be positionedin 1311831300111 in association. with: which is a. conduit opening to atmosphere at one end and air passes through the apparatus to the space to be heated after the manner as shown and described in my U. S. Patent No. 2,258,682 of October 14, 1941.

In the drawing:

Fig. 1 is a front elevation of my improved heating apparatus.

Fig. 2 is a side elevation thereof.

Fig. 3 is a front elevation with the cover plate removed.

Fig. 4 is a section taken on line 4-4 of Fig. 1. Fig. 5 is a section taken on line 5-5 of Fig. 3. Fig. 6 is a section taken on line 6-6 of Fig. 5. Fig. 7 is a section taken on line I--'I of Fig. 5. Fig. 8 is a section taken on line 88 of Fig. 5. Fig. 9 is a section taken on line 99 of Fig. 3. Fig. 10 is a section taken on line I Il-IO Fig. 3.

The invention herein disclosed is comparatively simple and of less cost than the structure shown in my said patent and comprises a frame element I rectangular in cross section and having a rear plate 2 and a forward plate 3 in spaced relation as shown in Fig. 4. The bottom plate 4 of the framework is shaped to support an end of the air conduit 5 which preferably opens to atmosphere.

Spaced forwardly from the plate 3 is a plate 6 having a series of vertically spaced horizontal ribs 1 triangular in cross section on its outer face. These ribs 1 are less in length than the distance between the side walls and 26 and are so arranged that heated gases flow back and forth between the ribs transversely of the plate 6 as indicated by the arrows in Fig. 3.

At the bottom and forward side of the plate 6 is a gas burner 8 having a series of apertures 9 through which gas is discharged to flow upwardly and transversely of the forward face of the plate 6 between and around the ends of the triangular members I and thence downwardly in the space I!) between the plates 3 and 6 and passes through apertures l I in the plate 3 and thence upwardly in the passageway I2 at the back of the plate 3 and discharges downwardly through the passage I3 to exhaust pipe I4 as will be understood from Figs. 1 and 9. By means of the conduit 5 air is discharged through the open end 2|.

Preferably a removable plate I 5.is-.provided on the inner face of theplate. fiwhichhas a. series of. V. shaped :elements. I, the. apices of which are rounded, and. practically in. contact. with. the plate l5-to..prevent-the burning gases from flowing directly. upward. This. restricts the. rapidity of flow of the burning gases. The plate I5 may be formed of transparent, fire resistant material and has a series of apertures I6 at the lower end to permit air and burned gases to pass upward and around the ends of the triangular members 'I and thence downwardly through the passageway !0 and apertures II in the plate 3 and thence upwardly through the passageway I2 as shown in Fig. 5.

The passageway I3 is provided with a conduit I4 open to atmosphere and a plate 20 separates the passageways l3 and I2. The heated air passes upwardly in the passageway 5 to the outlet 2| to the room being heated.

Fuel is discharged to the burner through a conduit 22 as shown in Figs. 1 and 3, and this conduit 22 is provided with apertures 23, and on the conduit is an imperforate ring 24 slidable thereon to vary the area of the apertures and thus permit a greater or less volume of air per unit of time to be introduced into the gas stream flowing in the conduit 22 to the burners.

The apparatus may be made in various size depending upon the area of the space to be heated. A small size is adapted for use in a trailer in which case gas under pressure would be provided in a tank in the trailer.

It is believed obvious from the foregoing description that the features and objects of the invention are attained by the structural arrangement of parts as hereinbefore described.

Having thus briefly described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is:

An air conditioning system adapted for heating the air in an enclosed space comprising an upright housing of rectangular shape in cross section and comprising front, rear, top, bottom and side walls, a fiat upright plate therein engaging said side walls, spaced rearwardly of the front wall thereof, a fuel burner upon the bottom wall of said housing between said front wall and plate and extending across the width of said housing, a series of vertically spaced horizontal ribs :mounted upon the front side of said plate and with their outer ends projected towards and terminating adjacent said front wall, said ribs being shorter than the width of said plate with alternate ribs joined to alternate sides of the housing to provide a circuitous upward passage for the products of combustion adjacent said plate, said housing front wall having a plurality of air inlet slots at its lower end adjacent said burner, a second flat upright plate transversely apertured at its lower end, spaced rearwardly of said first plate and extending across the interior of said housing to define an elongated passage between said plates for the downward flow of said products of combustion, means at the top of said plates communicating said passages, an upright air conduit centrally arranged within said housing between and spaced from said second plate and the rear wall of said housing, said conduit having an outlet extending horizontally over the top of said housing adapted to communicate with said enclosed space, said conduit extending below said housing and having an inlet adapted to communicate with said enclosed space, a pair of spaced upright coplanar plates ucts of combustion adjacent said second plate, and additional spaced passages for the downward flow of said products of combustion adjacent the rear wall of said housing, means joining the upper portions of the latter passages and said second elongated passages, and an exhaust pipe joined to the rear wall of said housing in communication with the lower ends of said last passages, and with its other end adapted for communication with the outside atmosphere.

EDWARD KENT.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 734,732 Morss July 28, 1903 980,649 Lorentz Jan. 3, 1911 1,104,120 Kane et a1 July 21, 1914 1,150,998 Chaney Aug. 24, 1915 1,695,079 Barnhart Dec. 11, 1928 2,258,682 Kent Oct. 14, 1941 FOREIGN PATENTS Number Country Date 517,347 France Dec. 17, 1920 

